WinForm实现Rabbitmq官网6个案例-Topics
代码:
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namespace RabbitMQDemo { public partial class Topics : Form { private string exchangeName = "topic_logs"; // private string exchangeType = ExchangeType.Topic;//交换机类型 private readonly static Topics _Topics; Action<string, TextBox> SetText; static Topics() { _Topics = new Topics(); } /// <summary> /// 单例模式 /// </summary> public static Topics SingleForm { get { return _Topics; } } private Topics() { CheckForIllegalCrossThreadCalls = false; InitializeComponent(); ReceiveMsg(txtConsumer1); ReceiveMsg(txtConsumer2); SetText += OnSetText; } private void btnSendMsg_Click(object sender, EventArgs e) { SendMsg(); } private void SendMsg() { string message = txtPublisher.Text; if (message.Trim().Length <= 0) { MessageBox.Show("请输入要发送的消息"); } var factory = new ConnectionFactory() { HostName = "localhost" }; using (var connection = factory.CreateConnection()) using (var channel = connection.CreateModel()) { channel.ExchangeDeclare(exchange: exchangeName, type: exchangeType); var routingKey = cbBoxRoutingKey.Text; var body = Encoding.UTF8.GetBytes(message); channel.BasicPublish(exchange: exchangeName, routingKey: routingKey, basicProperties: null, body: body); } } private void ReceiveMsg(TextBox box) { var factory = new ConnectionFactory() { HostName = "localhost" }; var connection = factory.CreateConnection(); var channel = connection.CreateModel(); channel.ExchangeDeclare(exchange: exchangeName, type: exchangeType); var queueName = channel.QueueDeclare().QueueName; if (box.Name == "txtConsumer1") {//消费者1 channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: "*.*.one"); channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: "one.#"); } else if (box.Name == "txtConsumer2") {//消费者2 channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: "*.*.two"); channel.QueueBind(queue: queueName, exchange: exchangeName, routingKey: "two.#"); } var consumer = new EventingBasicConsumer(channel); consumer.Received += (model, ea) => { var msg = Encoding.UTF8.GetString(ea.Body); box.Invoke(SetText, msg, box); }; channel.BasicConsume(queue: queueName, noAck: true, consumer: consumer); } private void OnSetText(string text, TextBox box) { box.Text += string.Format("{0}\r\n", text); } private void Topics_Load(object sender, EventArgs e) { string[] dataSource = new string[] { "send.msg.one", "send.msg.two", "one.receive.msg", "two.receive.msg" }; cbBoxRoutingKey.DataSource = dataSource; cbBoxRoutingKey.DropDownStyle = ComboBoxStyle.DropDown; } } }
界面:
大概流程:
生产者绑定一条消息和type='topic'的交换机以及路由键routingKey来发送到队列,消费者绑定同样的交换机和路由键来获取并处理消息
测试结果: